2001230100 has 216 divisors, whose sum is σ = 6783489440. Its totient is φ = 491754240.

The previous prime is 2001230093. The next prime is 2001230117. The reversal of 2001230100 is 10321002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 631119 + ... + 634281.

Almost surely, 2^2001230100 is an apocalyptic number.

2001230100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001230100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3391744720).

2001230100 is an abundant number, since it is smaller than the sum of its proper divisors (4782259340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001230100 is a wasteful number, since it uses less digits than its factorization.

2001230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239 (or 3229 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2001230100 is about 44735.1103720556. The cubic root of 2001230100 is about 1260.1793017701.

Adding to 2001230100 its reverse (10321002), we get a palindrome (2011551102).

The spelling of 2001230100 in words is "two billion, one million, two hundred thirty thousand, one hundred".